Flexible Wall Valves Fluid Patents (Class 251/61.1)
  • Patent number: 10421071
    Abstract: A device and method for the individual dosing or drainage of small quantities of liquids or gases in microreactors and microreactor arrays, having a membrane and an outlet to a reaction chamber or a reactor arranged therebelow, which is surrounded by an area which forms a fluid line with the membrane, wherein the area or the membrane has an annular elevation which can be arranged around the outlet.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: September 24, 2019
    Assignee: m2p-labs GmbH
    Inventors: Frank Kensy, Niklas Frische, Carsten Mueller
  • Patent number: 10329941
    Abstract: An impingement manifold includes a fluid inlet passage and a pressurized chamber. The pressurized chamber includes at least one lobe. The at least one lobe includes a flow improving feature configured to minimize vorticity of a flow field within the pressurized chamber, and at least one flow outlet.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: June 25, 2019
    Assignee: United Technologies Corporation
    Inventors: Michael D. Werkheiser, Christopher W. Robak, Thomas J. Martin, Matthew E. Lynch
  • Patent number: 10301170
    Abstract: A valve is provided with a tubular structure having an outer tube and an inner tube, and a diaphragm member having a thin film disposed to cover one end of the inner tube and an anchor part which encircles a peripheral edge of the thin film and comes into close contact with an inner wall of the outer tube and an outer wall of the inner tube.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: May 28, 2019
    Assignees: THE UNIVERSITY OF TOKYO, NIKON CORPORATION
    Inventors: Takanori Ichiki, Shoutarou Terane, Kuno Suzuki
  • Patent number: 9784257
    Abstract: Techniques and mechanisms for changing a flexibility of a sheet structure. In an embodiment, a garment or other device includes sheet structure, where an interface region is disposed between overlapping layer portions of a sheet structure. While a pressure differential is maintained between the interface region and a chamber of the garment, a valve of the garment is opened to allow an exchange of fluid between the interface region and the chamber. In another embodiment, the exchange of fluid changes a flexibility of the sheet structure by initiating or alleviating friction jamming between the overlapping layer portions.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: October 10, 2017
    Assignee: X Development LLC
    Inventor: Eric H. C. Liu
  • Patent number: 9644794
    Abstract: An arrangement composed of a flow cell and an apparatus for operating the flow cell, wherein the flow cell has at least two layers, between which the operator device can produce a cavity structure or alter an existing cavity structure with curvature of at least one of the two layers.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: May 9, 2017
    Assignee: THINXXS MICROTECHNOLOGY AG
    Inventor: Lutz Weber
  • Patent number: 9593678
    Abstract: The present invention involves, in some embodiments, systems and methods for pumping fluid into or out of a patient via a cartridge. The cartridge may include a membrane defining a chamber and mechanisms to supply, measure and control pressure in the chamber. The system further includes a processor that can be configured to compare certain pressure measurements to each other to facilitate determining if an error condition exists in the medical system if the difference between measurements is greater than a threshold. In certain cases the error condition may indicate leakage of the membrane, for example due to a pinhole in the membrane.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: March 14, 2017
    Assignee: DEKA Products Limited Partnership
    Inventors: Larry B. Gray, Robert J. Bryant, Jr., Geoffrey P. Spencer
  • Patent number: 9494151
    Abstract: The present invention involves, in some embodiments, fluid handling systems and methods for pumping fluid to and from a patient. The system and methods in certain embodiments involve a pumping cartridge and a reusable component configured to mate with the pumping cartridge comprising. The reusable component may comprise a control chamber and a pressure transducer configured to measure a gas pressure associated with the control chamber, and may further include a processor configured to supply the control chamber with a gas at a predetermined pressure, open the pump chamber to the surroundings, monitor the gas pressure associated with the control chamber using the pressure transducer over a predetermined period of time, and determine if the change in gas pressure exceeds a predetermined limit.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: November 15, 2016
    Assignee: DEKA Products Limited Partnership
    Inventors: Larry B. Gray, Robert J. Bryant, Jr., Geoffrey P. Spencer
  • Patent number: 9475241
    Abstract: An inflatable membrane apparatus (10) comprising (a) a fluid accumulator (11) having an upper and a lower face and a fluid entrance (12), said lower face being partly formed by an inflatable membrane (14), and (b) a trunconical part (15) projecting outwardly from the lower face of the accumulator whose greater base is closed by at least part of the inflatable membrane (14) and smaller base forms a circular opening, whereby, when pressurized fluid is introduced into the accumulator (11), deformation of the inflatable membrane (14) is guided by the trunconical part.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: October 25, 2016
    Assignee: ESSILOR INTERNATIONAL COMPAGNIE GENERALE D'OPTIQUE
    Inventors: Peiqi Jiang, Fadi O. Adileh, Yassin Yusef Turshani
  • Patent number: 9212755
    Abstract: A fluid control device includes two opening and closing valves 2, 3 disposed symmetrical to each other and having an identical shape, two fluid discharge passages 6, 7, 11, 12 having an equal length and provided in parallel with each other in outlets of the opening and closing valves 2, 3, and a connection member 10 attachable to a chamber and having two fluid passages 25, 26 formed in an equal length to and communicating with the two fluid discharge passages 6, 7, 11, 12, the connection member being provided in outlets of the two fluid discharge passages 6, 7, 11, 12.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: December 15, 2015
    Assignee: FUJIKIN INCORPORATED
    Inventors: Haruhiko Kuriki, Takahiro Matsuda, Mutsunori Koyomogi, Megumu Makino
  • Patent number: 9127783
    Abstract: A micro-fluidic system comprising a micro-fluidic channel, which has a wall provided with a hole, within which a closing portion of a closing element extends; when the closing portion is arranged within the micro-fluidic channel, the passage of the liquid along the channel is interrupted; by deforming the closing element by suction the closing portion may be lifted and therefore allow the passage of liquid along the micro-fluidic channel.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: September 8, 2015
    Assignee: SILICON BIOSYSTEMS S.P.A.
    Inventors: Gerardo Perozziello, Giuseppe Sardella, Gianni Medoro, Alex Calanca, Nicolò Manaresi
  • Patent number: 9039395
    Abstract: The present invention involves, in some embodiments, systems and methods involving fluid handling apparatus for pumping fluid to and from a patient, which may include a reusable component and a disposable pumping cartridge. The reusable component may comprise a control chamber and a pressure transducer configured to measure a gas pressure associated with the control chamber, as well as a processor. The processor may be configured to supply the control chamber with a gas at a predetermined pressure, monitor the gas pressure associated within the control chamber with the pressure transducer over a predetermined period of time, and determine if the change in gas pressure associated within the control chamber exceeds a maximum allowable predetermined limit.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: May 26, 2015
    Assignee: DEKA Products Limited Partnership
    Inventors: Larry B. Gray, Robert J. Bryant, Jr., Geoffrey P. Spencer
  • Patent number: 9033307
    Abstract: A substrate of a lab-on-a-chip system has two adjacent recesses, one serving as a flow channel and the other one being filled with an elastomer compound. In a first state, the elastomer compound and the substrate delimit the flow channel in a section. In a second state, the elastomer compound takes up the space in the recess in the substrate along a cross-section of the flow channel, thereby completely closing the flow channel. The substrate and the elastomer compound may be produced by injection molding techniques.
    Type: Grant
    Filed: April 29, 2010
    Date of Patent: May 19, 2015
    Assignee: Boehringer Ingelheim Vetmedica GmbH
    Inventors: Katja Friedrich, Walter Gumbrecht, Peter Paulicka
  • Patent number: 9027602
    Abstract: A method of isolating a section of pipe includes the steps of locating a seal unit having two seal elements in a pipe via a penetration in the pipe, such as a branch or tee. The seal unit is then positioned in the pipe downstream of the penetration. The seal elements are activated using a primary activation mechanism to engage the pipe wall and then maintained in an activated condition using a secondary activation mechanism.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: May 12, 2015
    Assignee: Stats (UK) Limited
    Inventor: Angus George Bowie
  • Patent number: 9010719
    Abstract: A flow control device is capable of performing accurate flow control over a wide pressure range. The flow control device includes: a housing; a diaphragm splitting the housing into a gas chamber side to which gas is introduced and a fluid chamber side through which fluid passes, and being activated by the differential pressure generated between the gas chamber side and the fluid chamber side; and a valve body which operates in integration with the diaphragm to regulate the flow of the fluid introduced to the fluid chamber side. The diaphragm includes: a base part provided in a substantially central part of the diaphragm; and a thin film part provided on the outer rim of the base part. An opposing surface which is provided on the fluid chamber side to oppose the diaphragm includes a retaining form which retains the shape of the thin film part deformed by the differential pressure.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: April 21, 2015
    Assignee: Surpass Industry Co., Ltd.
    Inventors: Kazuki Hirai, Hiroki Igarashi
  • Patent number: 9011797
    Abstract: A microfluidic system includes a bubble valve for regulating fluid flow through a microchannel. The bubble valve includes a fluid meniscus interfacing the microchannel interior and an actuator for deflecting the membrane into the microchannel interior to regulate fluid flow. The actuator generates a gas bubble in a liquid in the microchannel when a sufficient pressure is generated on the membrane.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: April 21, 2015
    Assignee: Cytonome/ST, LLC
    Inventors: John R. Gilbert, Sebastian Böhm, Manish Deshpande
  • Patent number: 9010729
    Abstract: A membrane valve comprising a first and a second valve housing part and a membrane clamped between the valve housing parts comprises a peripherally surrounding bead on the membrane and a thin, axially movable membrane portion adjacent thereto. The bead is supported by the two valve housing parts and is provided with an undercut at a radial inner side. Further, a membrane for installation in a membrane valve is provided.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: April 21, 2015
    Assignee: Buerkert Werke GmbH
    Inventors: Johannes Baumann, Christina Ripsam, Ralf Scheibe, Holger Schwab
  • Patent number: 8979621
    Abstract: A system for storing articles can have at least two operating modes. In the first mode, gases are evacuated from the system whereby the articles are stored at a pressure less than the pressure at the exterior of the system. In the second mode, gases are evacuated while the system is open to the admittance of gases from the exterior of the system whereby the articles are ventilated by the admitted gases. The system also can have a third operating mode wherein both the first and second modes are rendered inoperative. The storage system can function so that when the articles are stored in the first mode, gases are intermittently removed from the system whereby the pressure at which the articles are stored is maintained at less than the pressure at the exterior of the system. The storage system can be located in a refrigeration appliance such as a household refrigerator.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: March 17, 2015
    Assignee: Electrolux Home Products, Inc.
    Inventors: Paul H. Kelly, Robert L. Cushman, Robert J. Turnbull, Charles D. Baker, Aaron W. Arvia
  • Patent number: 8979117
    Abstract: The restraining function of support structure airbags in particular and mechanical airbags should be able to be specifically guaranteed in a simple manner. To this end, an air cushion for an airbag of a motor vehicle is provided, having a sleeve with at least one opening and a closure element arranged on the at least one opening in order to at least partially prevent air from flowing from a first direction, Furthermore, the closure element is flexible and has a channel-shaped design at least upon the flow of air from a second direction opposite the first direction. The closure element thus has the effect of a check valve.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: March 17, 2015
    Assignee: Daimler AG
    Inventors: Christian Burczyk, Andreas Hirth, Lutz Quarg, Friedrich Reiter, Clark Ruedebusch
  • Publication number: 20150053874
    Abstract: [Problem] To provide a piston-format working-fluid-pressure actuator capable of commonly using components when the piston-format working-fluid-pressure actuator is used for a reverse action or a normal action and decreasing a length dimension, in the forward/backward movement direction of the output shaft and to provide a control valve using the piston-format working-fluid-pressure actuator and a valve member. [Solution] A piston-format working-fluid-pressure actuator (10) includes a casing (30) provided with a cylinder chamber (33) by including a cover portion (31) and a body portion (32), an output shaft (40) supported by the casing so as to be movable forward or backward, a piston (50) attached to the output shaft and defining the cylinder chamber, a spring member (60) applying an elastic force of moving the output shaft to the piston, and a working-fluid supply opening (70) supplying a working fluid.
    Type: Application
    Filed: March 18, 2013
    Publication date: February 26, 2015
    Applicant: ASAHI ORGANIC CHEMICALS INDUSTRY CO., LTD.
    Inventors: Norimitsu Kai, Hiroshi Suenaga
  • Patent number: 8910836
    Abstract: A valve assembly for dispensing liquid from a container. A manifold includes a first channel extending downwardly from a first inlet to a first side outlet, and a second channel extending downwardly from a second inlet on the manifold to a second outlet. The first side outlet and the second inlet are located on the same horizontal plane in reference to the longitudinal axis of the manifold. An elastic membrane sheathed around the manifold extends over the first side outlet and the second inlet. External fluid pressure causes the membrane to expand under fluid flow to provide for fluid communication through the manifold. In alternate embodiments fluid pressure flowing through the first and second channels causes the elastic membrane to expand enabling fluid communication between the first side outlet and the second inlet. A sealing sleeve extends around the elastic membrane is movable from a first to a second position.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: December 16, 2014
    Inventor: Ambrosios Kambouris
  • Patent number: 8905061
    Abstract: A needle fill valve, in which a bearer is set on the top of a body, the bearer is covered on an upper cover, a front cavity is set on the front side of the bearer, an inner cavity is set on the location corresponding to the front cavity for placing the annular gasket of the sealing plate wrapped a sealing valve pad, and the purpose of fixing the sealing valve pad for preventing being disengaged from the annular gasket is achieved by fastening an upper fixed seat and a lower fixed seat.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: December 9, 2014
    Inventor: So-Mei Huang
  • Publication number: 20140346378
    Abstract: An improved microfluidic system with an improved microfluidic valve module is disclosed. The microfluidic system includes a microfluidic chip and one or more valve modules. The microfluidic chip has microfluidic channels and one or more cavities formed in the chip, each of the one or more cavities designed to receive one of the one or more valve modules. Each of the one or more valve modules includes a first layer, a control layer and one or more second layers. The first layer includes a deformable material. The control layer has a microfluidic control chamber formed in a portion of it. The control layer is also located adjoining the first layer and the deformable material of the first layer forms a deformable surface of the control chamber. The one or more second layers include an input microfluidic channel and an output microfluidic channel.
    Type: Application
    Filed: December 21, 2011
    Publication date: November 27, 2014
    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Chin Hock Kua, Zhenfeng Wang, Wei Fan, Cong Zhi Leon Chan, Zhiping Wang
  • Patent number: 8846183
    Abstract: A method of fabricating an elastomeric structure, comprising: forming a first elastomeric layer on top of a first micromachined mold, the first micromachined mold having a first raised protrusion which forms a first recess extending along a bottom surface of the first elastomeric layer; forming a second elastomeric layer on top of a second micromachined mold, the second micromachined mold having a second raised protrusion which forms a second recess extending along a bottom surface of the second elastomeric layer; bonding the bottom surface of the second elastomeric layer onto a top surface of the first elastomeric layer such that a control channel forms in the second recess between the first and second elastomeric layers; and positioning the first elastomeric layer on top of a planar substrate such that a flow channel forms in the first recess between the first elastomeric layer and the planar substrate.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: September 30, 2014
    Assignee: California Institute of Technology
    Inventors: Marc A. Unger, Hou-Pu Chou, Todd A. Thorsen, Axel Scherer, Stephen R. Quake
  • Patent number: 8807164
    Abstract: The present invention provides devices and methods for micro-scale simulated moving bed chromatography (SMB) for continuous preparation of analytic quantities of highly pure fractions of target molecules. The present apparatus and method of the invention is adapted in a preferred embodiment to separations by affinity chromatography involving three discontinuous liquid flow loops. An alternative embodiment of affinity chromatography utilizes standard SMB operating under isocratic conditions.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: August 19, 2014
    Assignee: Semba Biosciences, Inc.
    Inventors: Joerg Werner Baier, Robert Charles Mierendorf, Anthony Charles Grabski, Andrew Paul Wilke, Anil Rajaram Oroskar
  • Patent number: 8790318
    Abstract: The invention concerns a flow regulator, made of a stack of 3 plates, respectively a top plate including a flexible membrane (1), a middle plate (2) with pillars and through holes and a bottom plate (3) with fluidic ports, micro channels and through holes (8,9,12). The principle is based on the deformation of the membrane due to the pressure of the liquid. The membrane goes in contact with the pillars of the middle plate, obstructing gradually the through holes of the pillars. The device is designed to keep the flow constant in a predefined range of pressure. The device is dedicated to ultra low flow rate up to 1 ml per day or below, typically for drug infusion. Plastic flow regulators comprise preferably several independent valves coupled in parallel. The membrane plate is therefore made of several flexible membranes obstructing gradually the flow by increasing the pressure. Stress limiters are used to avoid plastic deformation of the membrane.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: July 29, 2014
    Assignee: Debiotech S.A.
    Inventor: Eric Chappel
  • Publication number: 20140203198
    Abstract: A sealing apparatus for a back pressure regulator includes: a body defining a process surface, and including: at least one process void communicating with the process surface; a recess disposed in the process surface; a floating support hub disposed in the recess, carrying an O-ring; a vent void communicating with the recess; an inlet port disposed in fluid communication with the at least one process void and adapted to be coupled in fluid communication with a fluid at a process pressure; and an outlet port disposed in fluid communication with the vent void; and a diaphragm having opposed reference and process sides, the diaphragm disposed against the body such that the process side is substantially coplanar with the process surface.
    Type: Application
    Filed: June 23, 2012
    Publication date: July 24, 2014
    Inventors: Jeffrey Dean Jennings, Tony Boyd Tang, Keith Alan Roberts
  • Publication number: 20140197339
    Abstract: The present disclosure relates to method, system for microfluidic control. One or more embodiments of the disclosure relate to pneumatically actuated “lifting gate” microvalves and pumps. In some embodiments, a microfluidic control module is provided, which comprises a plurality of pneumatic channels and a plurality of lifting gate valves configured to be detachably affixed to a substrate. The plurality of lifting gate valves are aligned with at least one fluidic channel on the substrate when affixed to the substrate. Each of the valves comprises: a pneumatic layer, a fluidic layer, and a pneumatic displacement chamber between the pneumatic layer and the fluidic layer. The fluidic layer has a first side facing the pneumatic layer and a second side facing away from the pneumatic layer, wherein the second side has a protruding gate configured to obstruct a flow of the fluidic channel when the fluidic layer is at a resting state.
    Type: Application
    Filed: January 14, 2014
    Publication date: July 17, 2014
    Inventors: Richard A. Mathies, Jungkyu Kim, Erik C. Jensen
  • Patent number: 8740175
    Abstract: A filling channel opening and closing device, which is used in a liquid product filling apparatus, including an opening and closing control unit that includes a flexible tube and a chamber enclosing the flexible tube in a gastight manner, a gas supply and exhaust device that collapses and restores the flexible tube by supplying pressurized gas into the chamber and exhausting the gas from the chamber, and a control device that controls the timing of supply and exhaust of the gas of the gas supply and exhaust device.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: June 3, 2014
    Assignee: Toyo Jidoki Co., Ltd.
    Inventors: Kenji Kawamura, Namiyoshi Tanaka, Hideo Muranaka
  • Patent number: 8727305
    Abstract: A diaphragm valve is used to perform opening/closing operations to switch between a state where two flow paths 14a and 15a communicate with each other and a state where the flow paths 14a and 14b are blocked from communicating with each other. A diaphragm unit 31 which is disposed in a valve housing 13 has a hollow valve body 32 capable of being reciprocated in the axial direction, the diaphragm unit 31 is formed with a communication flow path 32a through which two flow paths 14a and 14b are communicated with each other. A first diaphragm 34 is provided to one end portion of a hollow valve body 32, and a second diaphragm 36 is provided to the other end of the hollow valve body 32, when the hollow valve body 32 is moved in its axial direction and abuts on a valve seat portion 42, the communication flow path 32a is closed.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: May 20, 2014
    Assignee: Koganei Corporation
    Inventor: Ryoji Kanai
  • Patent number: 8720470
    Abstract: The various embodiments herein disclose a system and a method for regulating a flow of fluid stream in fluid storage and dispensing systems. The system comprising a valve arrangement including a compressed air unit bloated by a connecting air inlet tube, a frame and a valve elevating means to mount the valve arrangement on the frame, several sensors to detect one crisis factor, a communication unit, a data logger and processing unit, a remote management system and several actuators to regulate the operation of the valve arrangement. The valve arrangement shuts down the outflow of fluid stream on receiving a valve shutdown signal from one of the sensors and data processing unit in case of a crisis detection. The data processing unit informs the remote management system to take adequate safety measures through the communication unit.
    Type: Grant
    Filed: February 12, 2012
    Date of Patent: May 13, 2014
    Inventors: Abdollah Hosseini, Vahid Saadatmand, Reza Giyahi
  • Patent number: 8695640
    Abstract: A method of fabricating an elastomeric structure, comprising: forming a first elastomeric layer on top of a first micromachined mold, the first micromachined mold having a first raised protrusion which forms a first recess extending along a bottom surface of the first elastomeric layer; forming a second elastomeric layer on top of a second micromachined mold, the second micromachined mold having a second raised protrusion which forms a second recess extending along a bottom surface of the second elastomeric layer; bonding the bottom surface of the second elastomeric layer onto a top surface of the first elastomeric layer such that a control channel forms in the second recess between the first and second elastomeric layers; and positioning the first elastomeric layer on top of a planar substrate such that a flow channel forms in the first recess between the first elastomeric layer and the planar substrate.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: April 15, 2014
    Assignee: California Institute of Technology
    Inventors: Marc A. Unger, Hou-Pu Chou, Todd A. Thorsen, Axel Scherer, Stephen R. Quake
  • Publication number: 20140077108
    Abstract: A diaphragm-type control valve having a diaphragm and a valve body is provided preferably for use in the separation of and fluid control between a fluid source and a pressurized gas volume. The diaphragm element and a port in the body together form an intermediate chamber that eliminates the need for a check-valve downstream of the valve. In one preferred embodiment, an inner surface of the valve body defines a chamber having an inlet and an outlet in communication with the chamber, and an elongated seat member defining a groove in communication with the port. A diaphragm member having upper and lower surfaces is disposed within the chamber. The lower surface preferably includes a pair of spaced apart elongated members defining a channel therebetween. The diaphragm member engages the seat member placing the channel in communication with the groove to define an air seat in communication with the port.
    Type: Application
    Filed: November 19, 2013
    Publication date: March 20, 2014
    Applicant: TYCO FIRE PRODUCTS LP
    Inventors: Yoram Ringer, Roger S. Wilkins, Boris Frenkel
  • Publication number: 20140054477
    Abstract: Axial fluid valves having annular flow control members are described herein. An example axial fluid valve described herein includes an axial flow valve body defining a passageway between an inlet and an outlet. The example axial fluid valve includes a sleeve slidably received by an inner surface of the axial flow valve body and movable along an axis substantially parallel to a longitudinal axis of the passageway. The example axial fluid valve includes a linkage or a gear operatively connected to the sleeve to move the sleeve to vary a flow of fluid between the inlet and the outlet through the sleeve.
    Type: Application
    Filed: August 27, 2012
    Publication date: February 27, 2014
    Inventors: Ross Arthur Schade, Darren Allan Blum, Jacob Warner Bell, Dumindu Gayan Prathapasinghe
  • Patent number: 8657254
    Abstract: A gas release device that includes a reservoir of pressurised gas and a passageway from said reservoir to an outlet. There is an elastic gas permeable membrane in the passageway that allows gas release only via the membrane. A gas impermeable member is provided in the passageway that includes an interface positioned to contact said gas permeable membrane. Displacement of the gas permeable membrane is responsive to the pressure of the gas in the reservoir such that there is a greater interfacial contact between the gas impermeable member and the gas permeable membrane at a higher gas pressure than at lower pressure to thereby vary the exposed cross sectional area of the permeable membrane available to the flow in an inverse relationship to pressure.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: February 25, 2014
    Assignee: The New Zealand Institute for Plant and Food Research Limited
    Inventors: Lynn Roland Cate, Robert Bruce Jordan, Dean Antony Barker, Keith Robert Sharrock, Mark Francis Roche, Ronald Francis Henzell
  • Patent number: 8646471
    Abstract: A method of controlling a main fluid in a conduit using a microvalve is described. The microvalve includes a corresponding actuation aperture in an actuation aperture layer. A control fluid flows through the actuation aperture in response to an electric field applied via a charge distribution near an actuation aperture layer. In one embodiment, the electric field may adjust the opening and closing of the actuation aperture thereby controlling the flow of the control fluid. In a second embodiment, the control fluid is an electrorheological fluid where the electric field controls the viscosity of the ER fluid, thereby controlling fluid flow through the actuation aperture. In both embodiments the flow of the control fluid controls stretching of a flexible membrane into and out of the conduit, thereby controlling the flow of the main fluid by opening or closing the conduit.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: February 11, 2014
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Ashish Pattekar, Eugene M. Chow, Eric Peeters
  • Patent number: 8631798
    Abstract: A respiratory valve device includes a catheter balloon configured for being disposed in a respiratory gas pathway and valving the respiratory gas pathway.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: January 21, 2014
    Assignee: Carefusion 207, Inc.
    Inventors: Christopher M Varga, Earl Valentine, Thomas Dillingham, Alex Siemons
  • Patent number: 8616234
    Abstract: A diaphragm-type control valve having a diaphragm and a valve body is provided preferably for use in the separation of and fluid control between a fluid source and a pressurized gas volume. The diaphragm element and a port in the body together form an intermediate chamber that eliminates the need for a check-valve downstream of the valve. In one preferred embodiment, an inner surface of the valve body defines a chamber having an inlet and an outlet in communication with the chamber, and an elongated seat member defining a groove in communication with the port. A diaphragm member having upper and lower surfaces is disposed within the chamber. The lower surface preferably includes a pair of spaced apart elongated members defining a channel therebetween. The diaphragm member engages the seat member placing the channel in communication with the groove to define an air seat in communication with the port.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: December 31, 2013
    Assignee: Tyco Fire Products LP
    Inventors: Yoram Ringer, Roger S. Wilkins, Boris Frenkel
  • Patent number: 8561963
    Abstract: An improved microvalve is described. The microvalve includes a corresponding actuation aperture in an actuation aperture layer. A control fluid flows through the actuation aperture. The flow of the control fluid is controlled by an electric field typically applied via a charge distribution near an actuation aperture layer. In one embodiment, the electric field may adjust the opening and closing of the actuation aperture thereby controlling the flow of the control fluid. In a second embodiment, the control fluid is an electrorheological fluid where the electric field controls the viscosity of the ER fluid thereby controlling fluid flow through the actuation aperture. In both embodiments the flow of the control fluid controls stretching of a flexible membrane formed along the wall of a conduit through which a fluid to be controlled flows. The stretching of the flexible membrane controlling the flow of the main fluid to be controlled.
    Type: Grant
    Filed: December 19, 2007
    Date of Patent: October 22, 2013
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Ashish Pattekar, Eugene M Chow, Eric Peeters
  • Patent number: 8556225
    Abstract: The present invention involves, in some embodiments, pump chambers are configured to prevent contact of at least a portion of a membrane movable within the pump chamber to effect pumping from contacting an inner wall of the pump chamber, which can, in some embodiments, be useful to prevent any gas in the pump chamber from being pumped from the pump chamber during pumping. The pump chambers and pumping cartridges may form part of a pumping system further comprising valve(s) and a controller configured to detect and purge gas from the pump chamber.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: October 15, 2013
    Assignee: DEKA Products Limited Partnership
    Inventor: Larry B. Gray
  • Patent number: 8539981
    Abstract: A fluid flow regulator (1) of the passive type is disclosed which has a fluid inlet adapted to be connected to a fluid reservoir and a fluid outlet (13) adapted to be connected to a patient's body. The regulator comprises a rigid substrate (2) and a resilient membrane (3) tightly linked together so as to define a cavity (6) there between which is disconnected to the fluid outlet while the membrane has a first surface (12) opposite the cavity which is connected to the fluid inlet. The membrane has a plurality of through holes (15) contiguous with the cavity, to define a pathway for a fluid from the fluid inlet to the fluid outlet, and is flexible so as to be able to come into contact with the substrate as a fluid applies a sufficient pressure on the first surface.
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: September 24, 2013
    Assignee: Debiotech S.A.
    Inventor: Eric Chappel
  • Patent number: 8353308
    Abstract: An inflatable conduit plug is used to seal a conduit such as a floor drain or an air vent. The conduit plug includes a shroud that is removably sealed within the conduit so that fluids pass through the shroud opening. Axially disposed within the shroud is an inflatable bladder adapted for closing the shroud opening. The inflatable bladder is inflated by an inflation signal generated by a controller upon receipt of a contamination signal received from a remote contamination detector. The plug operates in a wireless environment and can be controlled remotely. The plug can also be adapted for diverting contamination away from sensitive lands and storm drains.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: January 15, 2013
    Assignee: ChemiGreen Inc.
    Inventors: Shachar Parran, Savio D'Souza, Gad Reem
  • Patent number: 8316878
    Abstract: A single chamber two-way servo-operated valve includes: a valve body presenting an inlet aperture, an outlet aperture, and an access; a cover to close the access of the valve body; a port dividing the valve body interior into an inlet section and an outlet section; a valving element including a disc for closing the port; and an actuating chamber at least partially defined by the cover. The disc and a flexible diaphragm are connected to the valving element. The disc of the valving element includes a rigid central core which is at least partially covered by a rubber layer adhering to the central core. The rubber layer extends from the edge of the disc to form the flexible diaphragm.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: November 27, 2012
    Inventor: Alberto Lodolo
  • Publication number: 20120261013
    Abstract: A microfluidic system includes a bubble valve for regulating fluid flow through a microchannel. The bubble valve includes a fluid meniscus interfacing the microchannel interior and an actuator for deflecting the membrane into the microchannel interior to regulate fluid flow. The actuator generates a gas bubble in a liquid in the microchannel when a sufficient pressure is generated on the membrane.
    Type: Application
    Filed: June 19, 2012
    Publication date: October 18, 2012
    Applicant: CYTONOME/ST, LLC
    Inventors: John Richard Gilbert, Sebastian Böhm, Manish Deshpande
  • Patent number: 8286665
    Abstract: Membrane valves and latching valve structures for microfluidic devices are provided. A demultiplexer can be used to address the latching valve structures. The membrane valves and latching valve structures may be used to form pneumatic logic circuits, including processors.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: October 16, 2012
    Assignee: The Regents of the University of California
    Inventors: Richard A. Mathies, William H. Grover, Erik C. Jensen
  • Publication number: 20120241023
    Abstract: A control valve device develops opening/closing accuracy of a valve assembly. The valve head 310a is configured to open and close a transfer path formed in the valve housing 305 by transmitting the power to the valve assembly 310 from the power transmission member according to a pressure ratio between working fluid supplied to the first space Us and the second space Ls, respectively. The valve head has a Vickers hardness larger than a Vickers hardness of a valve seat of the transfer path to be in contact with the valve head, and a hardness difference therebetween is set to be about 200 Hv to about 300 Hv.
    Type: Application
    Filed: October 29, 2010
    Publication date: September 27, 2012
    Applicants: Fujikin Incorporated, Tohoku University, Tokyo Electron Limited
    Inventors: Nobukazu Ikeda, Michio Yamaji, Tsuyoshi Tanikawa, Hiroshi Kaneko, Yasushi Yagi, Yuji Ono, Tadahiro Ohmi, Yasuyuki Shirai
  • Patent number: 8272392
    Abstract: A method of controlling a main fluid in a conduit using a microvalve is described. The microvalve includes a corresponding actuation aperture in an actuation aperture layer. A control fluid flows through the actuation aperture in response to an electric field applied via a charge distribution near an actuation aperture layer. In one embodiment, the electric field may adjust the opening and closing of the actuation aperture thereby controlling the flow of the control fluid. In a second embodiment, the control fluid is an electrorheological fluid where the electric field controls the viscosity of the ER fluid, thereby controlling fluid flow through the actuation aperture. In both embodiments the flow of the control fluid controls stretching of a flexible membrane into and out of the conduit, thereby controlling the flow of the main fluid by opening or closing the conduit.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: September 25, 2012
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Ashish Pattekar, Eugene M. Chow, Eric Peeters
  • Publication number: 20120212549
    Abstract: Provided is a liquid injecting apparatus equipped with a liquid injecting head, which is mounted on a carriage and moved reciprocally in a widthwise direction of a target, and a valve unit, which is mounted on the carriage to be supplied with liquid via a supply passage from a liquid retainer and to supply liquid to the liquid injecting head. The valve unit has a pressure chamber connected to the liquid retainer via the supply passage; a valve, which opens or closes the supply passage to supply liquid to the pressure chamber; and a flexible film member, which is displaced based on a negative pressure generated as liquid in the pressure chamber decreases to thereby operate the valve.
    Type: Application
    Filed: April 27, 2012
    Publication date: August 23, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yoshiharu ARUGA, Toshio KUMAGAI, Hitoshi MATSUMOTO
  • Publication number: 20120181460
    Abstract: This invention provides a device comprising at least one diaphragm valve actuated by a hydraulic actuation system. The device comprises a fluidics layer, an actuation layer and an elastic layer sandwiched between the fluidics layer and the actuation layer. The diaphragm valve comprises: a valve inlet and valve outlet comprised in the fluidics layer; a valve seat; a diaphragm comprised in the elastic layer; and an actuator. The diaphragm is actuatable to move into contact or out of contact with the valve seat, thereby closing or opening the diaphragm valve. The actuator comprises: a hydraulic conduit; a translator; and an incompressible fluid contained within the hydraulic conduit, wherein the incompressible fluid communicates with the translator and with the diaphragm. Translation of the translator transmits pressure through the incompressible fluid to actuate the diaphragm. The invention also provides systems including elements to operate the device and methods of using the device.
    Type: Application
    Filed: January 13, 2012
    Publication date: July 19, 2012
    Applicant: IntegenX Inc.
    Inventors: David Eberhart, Ezra Van Gelder
  • Patent number: 8220487
    Abstract: A method of fabricating an elastomeric structure, comprising: forming a first elastomeric layer on top of a first micromachined mold, the first micromachined mold having a first raised protrusion which forms a first recess extending along a bottom surface of the first elastomeric layer; forming a second elastomeric layer on top of a second micromachined mold, the second micromachined mold having a second raised protrusion which forms a second recess extending along a bottom surface of the second elastomeric layer; bonding the bottom surface of the second elastomeric layer onto a top surface of the first elastomeric layer such that a control channel forms in the second recess between the first and second elastomeric layers; and positioning the first elastomeric layer on top of a planar substrate such that a flow channel forms in the first recess between the first elastomeric layer and the planar substrate.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: July 17, 2012
    Assignee: California Institute of Technology
    Inventors: Marc A. Unger, Hou-Pu Chou, Todd A. Thorsen, Axel Scherer, Stephen R. Quake
  • Patent number: 8220494
    Abstract: Using basic physical arguments, a design and method for the fabrication of microfluidic valves using multilayer soft lithography is presented. Embodiments of valves in accordance with the present invention feature elastomer membrane portions of substantially constant thickness, allowing the membranes to experience similar resistance to an applied pressure across their entire width. Such on-off valves fabricated with upwardly- or downwardly-deflectable membranes can have extremely low actuation pressures, and can be used to implement active functions such as pumps and mixers in integrated microfluidic chips. Valve performance was characterized by measuring both the actuation pressure and flow resistance over a wide range of design parameters, and comparing them to both finite element simulations and alternative valve geometries.
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: July 17, 2012
    Assignee: California Institute of Technology
    Inventors: Vincent Studer, Stephen R. Quake, W. French Anderson, Sebastian J. Maerkl